Julius begtrup



(No Model.)

' J. BEGTRUP.

ENGINEGOVERNOR. No. 510,312. Batented Dec. 5,1893.

Attorney Inventor UNITED STATES PATENT OFFicE.

JULIUS BEGTRUP, OF RIDGWAY, PENNSYLVANIA, ASSIGNOR TO JAMES H. MOEWEN, OF SAME PLACE.

ENGINE-GOVERNOR.

SPECIFICATION forming part of Letters Patent No. 510,312, dated. December 5, 1893.

Anplieation filed January 4, 1893. Serial No. 457,247- (No model.)

To all whom it may concern.-

Be it known that I, JULIUS BEGTRUP, of Ridgway, Elk county, Pennsylvania, have invented certain new and useful Improvements in Engine-Governors, (Case B,) of which the following is a specification.

This invention pertains to improvements in that class of governors generally known as shaft-governors by reason of the fact that they are carried directly by the engine shaft.

My present improvements will be readily understood from the following description taken in connection with the accompanying drawings, in which Figure 1, is a face view or elevation of a governor exemplifying my present improvement; Fig. 2, a horizontal diametrical section of the same; Fig. 3, a view of 'the inside face of arm Q and aportion of theinertia-weight; and Fig. 4, a vertical diametrical section of portions of the apparatus.

In the drawings:-A, indicates the engine shaft; B, a wheel fixed thereon, which wheel, so far as the governor is concerned, is a mere carrier for the governor; O, a pivot-shaft mounted in a bearing in thewheeleccentric to and parallel with shaft A; D, an inwardly reaching arm fast upon one end of this pivot-shaft; E, the eccentric to be controlled, formed with or rigidly united to the inner end of this arm; F, a spring secured to the wheel; G, a slot formed lengthwise in arm D; H, a pivot secured in adjusted position along this slot; J, a link connecting pivot H with spring F, the tendency of the spring being therefore to hold the eccentric to position of greatest throw; K, a dash-pot cylinder radially disposed at the hub of the wheel and having its pistonrod pivoted to the structure of the eccentric; L, aprojection from the dash-pot cylinder inwardly into pivotal engagement with the hub of the wheel, the arrangement being obviously such that as the eccentric moves through its arc the dash-pot structure may take compensating movements upon the pivots uniting it to the eccentric and to the wheel; M, a centrifugal weight having a tail pivoted to the eccentric-structure, this weight being upon one side of a line cutting the axes of pivot- O and shaft A while the center of the eccentric is upon the opposite side of that line; N, a

link attached to, the weightM and to the wheel and compelling the weight to travel angularly as the wheel rotates but permitting the weight to move outward and inward as 5 5v the eccentric structure rocks upon its pivot; O, a dotted line indicating a modification of the Weight arrangement, the weight in such case being rigidly attached to the eccentricstructure instead of being pivoted to it, in

which case the link N is not needed; P, an inertia-weight mounted for partial rotation upon an axis coincident with the axis of shaft A, the exemplification showing this weight as being mounted upon the shaft, this weight consisting essentially of a mere mass balanced upon its axis of rotation, its form being preferably that of a wheel, as shown in the exemplification; and Q, an arm rigidly attached to pivot-shaft O and extending inwardly and engaging a notch in the inertiaweight, as clearly shown in Fig. 3, the arrangement being obviously such that slight rotation of the inertia-weight, with reference to the wheel, will tend to rock arm Q and, consequently, shift' the eccentric.

Assume the governor to be running in the direction indicated by the arrow of Fig. 1 and at such speed that the centrifugal effect of weight M is balanced by the contrary effect of spring F. An increase in rotative speed will cause the centrifugal force to preponderate, and the eccentric would obviously become shifted toa position corresponding with shorter throw, thereby modifying valve 210- tion appropriately for a reduction of speed. Wheel-speed having been thus properly restored to normal, the centrifugal effect of weight M will no longer be preponderating,

and the uncorrected tendency would be for go the eccentric to return to its normal position, thus restoring the eccentric to that position which previous action had clearly indicated was the improper position under the conditions. Inertia-weight P, rotating with the The effect rocked and the sanie adjusting effect "ref-f duced uf on the tea-emu as was iii ddiioti by' the centrifugal-weight M; but the inertiaweight, having thus fallen a trifle behind the wheel in its motion, and having taken up a new position with reference to thewheehand corresponding to the e'fiafiga jitisiitiiiii of the eccentric, is adverse to returning to its foiinei relationship with the wheel. The inertiaweight therefore, has no tendency to undo the good that has been done in efiectiiigl the adjustment of the eccentric.

Iclaim as my inventiona M 1. In an iigine governor, the combination, substantially as set forth; of carrier pro: vided with a central hub, a shifting eccentric" ivoted to said carrier and provided with an a'r'in projeetir'ig over said liiib; and a da p 7 cylinder and piston disposed Between said hub and ariii and pivoted to" their 2: In an engine g ievance-me combination, substantially as set forth; of a rotary ctr-Friar;

' a pivot shaft jo' H I 'ifiialed therein eccentric to the iiiiter of ititfitio'n at the eeriit; an ecentrio rigidly secured to one end of said pivotshat't, an arm fixed to the other endof said pivot-shaft, and an inertia-weight mounted for rotation on an axis coincident with the aiiisf of idiatioii 6f the earnest and engaging said aim.-

3. In an engine governor, the combination, substantially as set forth, of a rotary carrier, an inertia-weight having its axis of rotation coincident with the axis of rotation of said carrier, ,a pivot carried by said carrier eccentrio to it's pent of r'otation, a. centrifugalwe'iglit; and an etc iitiiti mounted for shifting motion on said pivot and connected with said inertia-weight itiid centrifugal-we niiiiidi iiiii witnessesa w A. L. BELL. 

